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Not able to delete plgins in wordpress “You cannot delete a plugin while it is active on the main site”

I am not able to delete any of the plugins on my WordPress site. When I tried deleting my wp-admin, it says that “You cannot delete a plugin while it is active on the main site.”. Please note that I don’t have multi site enabled.

I am using Discy theme and I have the following plugins enabled if that helps.

Contact Form 1

W3 Total Cache

WordPress Importer

WPQA – The WordPress Question And Answer Plugin

Yoast SEO

Most probably the issue will be related to the cache plugin you are using – W3 Total Cache. Try clearing all cache objects by going to the plugin setting page.
If clearing cache did not help, try deactivating the plugins one at a time and see if it gets resolved. Start with W3 Total Cache first.